21212000121119 has 16 divisors (see below), whose sum is σ = 22480942824000. Its totient is φ = 19945417519104.

The previous prime is 21212000121097. The next prime is 21212000121173. The reversal of 21212000121119 is 91112100021212.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 21212000121119 - 2⁸ = 21212000120863 is a prime.

It is a super-2 number, since 2×21212000121119² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21212000121094 and 21212000121103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21212000121199) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99494867 + ... + 99707835.

It is an arithmetic number, because the mean of its divisors is an integer number (1405058926500).

Almost surely, 2^{21212000121119} is an apocalyptic number.

21212000121119 is a deficient number, since it is larger than the sum of its proper divisors (1268942702881).

21212000121119 is a wasteful number, since it uses less digits than its factorization.

21212000121119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218482.

The product of its (nonzero) digits is 144, while the sum is 23.

The spelling of 21212000121119 in words is "twenty-one trillion, two hundred twelve billion, one hundred twenty-one thousand, one hundred nineteen".